CAS 499-50-3 appears in our catalog under these names: 6-Methylpyridine-2,4-dicarboxylic acid 97%, 6-Methylpyridine-2,4-dicarboxylic acid, 97%, 97%, 6-METHYLPYRIDINE-2,4-DICARBOXYLIC ACID, 95%. Offered by: Ambeed, Chemat, Fluorochem. Available pack sizes: 250mg, 1g, 100mg.